Add some support for a verify backlog

[fio.git] / io_u.c

diff --git a/io_u.c b/io_u.c
index 23037f1a8c227114bbcf90b8c0372d8ca5ce108d..76ad9335f0f3f14f503476dc11811539be29bc4b 100644 (file)
--- a/io_u.c
+++ b/io_u.c
@@ -926,6 +926,22 @@ struct io_u *get_io_u(struct thread_data *td)
                return NULL;
        }
 
+       if (td->o.verify_backlog && td->io_hist_len) {
+               int get_verify = 0;
+
+               if (td->verify_batch) {
+                       td->verify_batch--;
+                       get_verify = 1;
+               } else if (!(td->io_hist_len % td->o.verify_backlog) &&
+                        td->last_ddir != DDIR_READ) {
+                       td->verify_batch = td->o.verify_batch;
+                       get_verify = 1;
+               }
+
+               if (get_verify && !get_next_verify(td, io_u))
+                       goto out;
+       }
+
        /*
         * from a requeue, io_u already setup
         */
@@ -1024,6 +1040,7 @@ static void io_completed(struct thread_data *td, struct io_u *io_u,
        }
 
        td->last_was_sync = 0;
+       td->last_ddir = io_u->ddir;
 
        if (!io_u->error) {
                unsigned int bytes = io_u->buflen - io_u->resid;